L-Cysteine-13C3,15N CAS 202406-97-1

Purity >95%In StockPharmaceutical Standards
CAS No.202406-97-1
Molecular Formula[13C]3H7[15N]O2S
Molecular Weight125.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

L-Cysteine-13C3,15N CAS 202406-97-1 chemical structure

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

L-Cysteine-13C3,15N (CAS 202406-97-1) is a high-purity analytical reference standard with the molecular formula [13C]3H7[15N]O2S and a molecular weight of 125.13 g/mol.

Structurally, L-Cysteine-13C3,15N ([13C]3H7[15N]O2S) contains a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of -1.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 125.13 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

Physical & Chemical Properties

Molecular Formula[13C]3H7[15N]O2S
Molecular Weight125.13 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)-1.0
CAS Registry Year (est.)2014
Nitrogen Atoms1
Sulfur Atoms1

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